About this scene
Big-box store kitchenware aisle, weekday afternoon. She's busty, in a tank top, looking at a shelf of pots and pans. She turns to face the next set of shelves and finds the BBC at eye level four feet from her. Her face has not had time to set yet. The reaction reads in real time. She freezes for one second, takes one step backward, and her hand goes flat on the shelf behind her for stability. She does not leave the aisle.
What to watch for
The eye-level discovery is the source of the surprise. She turned thinking she'd see more pots. She did not see more pots. Watch her hand on the shelf. The fingers spread for stability and stay spread for the next twenty seconds. She does not move from that spot. By the end of the clip she has not picked up a single product or made a purchase decision. She has just been standing there looking, and the reaction face has slowly stabilized into something more like interest.